Binocular telescope with double hinge.



- R. STRAUBEL. BINOUULAB TELESCOPE WITH DOUBLE HINGE. APPLICATION I'ILIFD JUNE 25, 1908- Patnted Feb. 9, 1909.

gamma I ea /vwmbo/z M Fg4-Kv fiz/ffigw UNITED STATES PATENT OFFICE. RUDOLF STRAIIBEL, or mm, assieiron (r 'rnr. rum OE'GARL znrssjor JENA,

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No. 911,77e.

Specification of Letters Patent. Application'flled run; 25, 1908. sum 1%. 440.3% Q,

To all. whom it may co1'z.cc1"r1.'.'- 1 t Be it known that I, RunoLr STRAUBEL, a

citizen of the German Empire, and residing at Carl Zeiss strasse, Jena, in' the Grand Duchyof Saxe-Weimar, Germany, have in vented a new and useful Binocular Telescope with Double Hinge, of-which the following is aspecification. i

"distance.

I he invention relates to binocular; telescopes, which are equi pedwith a double hinge connection for a aptingv the distance between the ocula'rs' toQthe inter-p11 illary Such instruments have a ready been proposed in the atent specification 546871 Jiccording to t e presenflnventionthey are adapted in a ve simple manner for use on a stand-bydeve oping the member 'over the new telesco e, in that t ey have only one hinge," a I rawback: is. attached,

common to the two hinges as the stand head. The single telescopes, which are symmetrically connected with the one hinge and with the other hinge respectively, may be coupled together, 'so that with each ocular distance they lie symmetrically to the stand head.

.To the advantae insimplicity, which the ordinary hinged i'nocular telesco es have namely, the somewhat complicated appliance required to arrange them .on the stand so that the distance between the oculars can be conveniently altered without thesymmetrical trim of he instrument upon the stand being lost.- "lhe new stand telescope with double hinge is thusenable'd to enter into competition with the older binocularstand: telescopes, in that no supplementary appliances'to the stand are necessary, and a mem ber of thejin's'trumeht' proper represents at the sameitime an indispensable part of the stand. 1

If the new telescope be given an enlarged distance between the objectives, the single telescopes can, without the instrument losing its adaptability as a' binocular telescope, be rendered available for the .monocular use of To efiect this it is 'only'necessar to ma e each'hinge axle pass approximate y through the center of gravity of the respective-telescope. The .hinge is expediently formed, so that. the

main body of the single telescope lying trahsa verseto the direction of view is provided with trnnnions and the'stand head fitted Y with open bearings. that case the head tending in a horizonta 0f the stand and the twosingle telescopescan be individually packed for transport.

In the annexed drawing: Figure '1 1s a front elevation of a binocular te escope constructed accordmg to the invention. Fig. 2 is a plan viewof the binocular telescope. according to Fig. 1.

according to the invention. ig. 4 is a side elevation of the binocular telescope accordingto-Fig. 3.-

n the instrument according to-Figs. 1 and I 2, a stand, tripod or the like is supposed to be provided which has a conical ivot directed upwards. Upon this pivot t e member a. of the binocular telesco e-common to i the two hinges and provide with the hearing surface a-is mounted thus forming the head-piece of the stand. Themember a carries in its forkedends the hinge boltsb about which the single telescopes are rotatable by means of the 'rojections 0, which areadapted on the un erside of each single telescope.

Patented Feb. 9,1909.

"Fig. 3 is a front elevation I of a. second binocular .t'elesco e'constructed Uniform rotation of both single telesco es is secured by means of the two cog-whee sectors c gearing into one another, which permit of as large a rotation as is necessary to produce the largest and smallest distance between the oculars required. The telescopes -0 are arallel-vision dnes with a large tance etween the axis of the ocular c and that of the objective, 0*. Their osltion exresented corres onds. b the average distance between t e oculars. v

The binocular, telescope represented in Figs. 3 and4 also shows enlarged distance between the objectives. which may rest with its vertical pivot 11 up y.

ber common to the two hinges and carries at its two ends the bearings d which are open at the top. In these bearings the trunnions e of the two. single telescopes e are placed.

The distance between the axis of the objec- 100 tive e! l; ig. 4, and that of the ocular e is so large, that the single telescope has by far its largest dimension 1n the direction transverse tothese axes. The cross-piece d' is so long, that two olrserve'rs can simultaneously and conveniently. make use of. the scopes monocularly, the position of the single telescopes being that shown by the dotted l ines inliig. 3, notwithstanding which,

straight ine as re 'pstand whatever, forms the mem-' "single tele- 1 A standv head (1,

the size of the single telescopes renders'it poss1ble to bring the oculars together to a dis- 1 tance equal to the inter-pulpillary distance required, as shown by the lines in '1- ig. 3. The center of gravity of each single telescope lies, in the arrangement represented, in the common axis of its trunnion.

I claim:

1. The combination, with the head-piece of astand, of two telescopes and two hinge connections between the telescopes and the head-piece, the hinges lying symmetrical to the head-piece, parallel to each other and to the direction of view of the telescopes and at such points of the telescopes that these can be rotated so as tobesymmetrical to the headpiece and suitablefor binocular ol: servation.

2. The combination, with the head-piece of a stand, of two parallel-vision telescopes,

the main bodies of which lie transverse to the direction of view, and two hinge connections between the telescopes and the head-piece, the hinges being arranged symmetrical to the head-piece. narallel to each other and to the direction of view of the telescopes and each in proximity to the center of gravity of the respective telescope, so that the te eseopes can be rotated so as to be either symmetrical to the head-piece and suit-able for binocular observation or suitable for simultaneous monocular observation by two observers.

3. The combination, with the head-piece of "a stand, of two parallelvision telescopes,

RUDOLF STR AUBEL. Witnesses PAUL KRIJGER, RICHARD HAHN. 

